<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <!-- 准备好一个“容器” -->
	<div id="test"></div>
	
	<!-- 引入react核心库 -->
	<script type="text/javascript" src="../js/react.development.js"></script>
	<!-- 引入react-dom，用于支持react操作DOM -->
	<script type="text/javascript" src="../js/react-dom.development.js"></script>
	<!-- 引入babel，用于将jsx转为js -->
	<script type="text/javascript" src="../js/babel.min.js"></script>

    <script type="text/babel">
        //1.创建组件
        class Weather extends React.Component {
            //初始化状态
            state = {
                isHot: false,
                wind: '微风'
            }

            render() {
                const {isHot, wind} = this.state;
                return <h1 onClick={this.changeWeather}>今天天气很{isHot ? '炎热' : '凉爽'}，{wind}</h1>
            }

            //自定义方法————要用赋值语句的形式+箭头函数
            changeWeather = () => {
                const isHot = this.state.isHot;
                this.setState({
                    isHot: !isHot
                })
            }
        }

        //2.渲染组件到页面
        ReactDOM.render(<Weather/>, document.getElementById('test'));
    </script>
</body>
</html>